Chapter 5 Configuring Additional Router Features
Managing Configuration History and Rollback
To load rollback configuration changes from the current configuration to a specific session, go to global configuration or administration configuration mode and enter the load rollback changes to commitId command:
RP/0/0/CPU0:router(config)# load rollback changes to 1000000068
Building configuration...
Loading.
233 bytes parsed in 1 sec (231)bytes/sec
To load rollback configuration changes from the current configuration to a specified number of previous sessions, go to global configuration or administration configuration mode and enter the load rollback changes last
RP/0/0/CPU0:router(config)# load rollback changes last 6
Building configuration...
Loading.
221 bytes parsed in 1 sec (220)bytes/sec
In the preceding example, the command loads the rollback configuration changes for the last six commitIDs.
To load the rollback configuration for a specific commitID, go to global configuration or administration configuration mode and enter the load rollback changes commitId command:
RP/0/0/CPU0:router(config)# load rollback changes 1000000060
Building configuration...
Loading.
199 bytes parsed in 1 sec (198)bytes/sec
Deleting CommitIDs
You can delete the oldest configuration commitIDs by entering the clear configuration commit command in EXEC or administration EXEC mode. The clear configuration commit command must be followed by either the amount of disk space you want to reclaim or number of commitIDs you want to delete. To reclaim disk space from the oldest commitIDs, enter the clear configuration commit command followed by the keyword diskspace and number of kilobytes to reclaim:
RP/0/0/CPU0:router# clear configuration commit diskspace 50
Deleting 4 rollback points '1000000001' to '1000000004'
64 KB of disk space will be freed. Continue with deletion?[confirm]
To delete a specific number of the oldest commitIDs, enter the clear configuration commit command followed by the keyword oldest and number of commitIDs to delete:
RP/0/0/CPU0:router# clear configuration commit oldest 5
Deleting 5 rollback points '1000000005' to '1000000009'
80 KB of disk space will be freed. Continue with deletion?[confirm]
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